Asimina triloba, the papaw, pawpaw, paw paw, paw-paw, common pawpaw, Quaker delight, or hillbilly mango is a small deciduous tree native to the eastern United States and Canada, producing a large, yellowish-green to brown fruit, usually three to six inches long.. Pawpaw trees are the largest edible fruit trees native to North America, and their flavor is sunny, electric, and downright tropical: a riot of mango-banana-citrus that’s incongruous with its temperate, deciduous forest origins.